| 摘要 |
PURPOSE:To make a rotary wind for an aircraft compact by providing a wing extending in the direction of revolution along the upper surface of a disc the surface of which droops from the shaft center in the centrifugal direction and sending air into the space between the wing and the upper surface of the disc so as to obtain lift. CONSTITUTION:A rotary disc 2, which is a vital part of a vertical take off and landing plane 1, is formed in such a way that the surface of it droops from a rotary shaft center in the centrifugal direction. On the upper surface of the disc 2, the predetermined number of wing grooves are formed in a spiral form in the centrifugal direction and also in the backward direction with respect to the direction of revolution. An upper wing 7, which extends in the direction of revolution from the upper end brim with respect to the direction of revolution, is provided so that lift can be obtained by sending air into a space surrounded by the rising wall 8 of the wing groove, the upper wing 7, and the upper surface of the disc 2. With this contrivance, a rotary wing can be formed into a compact shape. |
